Patent EP0757059A1 successfully refreshed from Google Patents.
EP0757059A1
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EP
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Water-base silicone-modified acrylate polymer emulsion
Assignee: Asahi Kasei Corp
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Filing: 1994-09-02
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Granted: —
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Expires: 2014-09-02
Abstract
Abstract Disclosed is an aqueous, silicone-modified acrylate polymer emulsion, which is an acrylate polymer emulsion produced by subjecting a monomer system (A) comprising an acrylate monomer selected from the group consisting of an acrylic ester, a methacrylic ester and a mixture thereof to emulsion polymerization in an aqueous medium in the presence of an emulsifier (B) selected from the group consisting of a sulfonic acid group- or sulfonate group-containing ethylenically unsaturated monomer, a sulfate ester group-containing ethylenically unsaturated monomer and a mixture thereof, wherein the acrylate polymer emulsion is silicone-modified using a specific, silicone structure-containing modifier (C) during or after the emulsion polymerization. The aqueous, silicone-modified acrylate polymer emulsion of the present invention is capable of forming a coating having excellent water repellency, water resistance, weatherability, dispersion characteristics of pigment, gloss retentivity, stain resistance and adhesion properties, and therefore can be advantageously used as a paint, an undercoating or finish coating material for building materials, an adhesive, a pressure-sensitive adhesive, a processing agent for papers, or a finish coating material for textile fabrics, especially as a paint, or a finish coating material for building materials.
Inventors
- 👤 Toyoaki Yamauchi
- 👤 Yasuyuki Kamiyama
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-09 07:35
CPC Classifications
C; C09; C09D; C09D143/00; C09D143/04; C08; C08F; C08F2/00; C08F2/12; C08F2/16; C08F2/22; C08F2/24; C08F20/00; C08F20/02; C08F20/10; C08F20/12; C08F8/00; C08F8/42; C09D133/00; C09D133/04; C09D133/06; C09D133/062
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
205 words
An aqueous, silicone-modified acrylate polymer emulsion, which is an acrylate polymer emulsion produced by subjecting a monomer system (A) to emulsion polymerization in an aqueous medium in the presence of an emulsifier (B), wherein said acrylate polymer emulsion is silicone-modified using a silicone structure-containing modifier (C) during or after said emulsion polymerization; wherein said monomer system (A) comprises an acrylate monomer selected from the group consisting of an acrylic ester, a methacrylic ester and a mixture thereof; wherein said emulsifier (B) is selected from the group consisting of a sulfonic acid group- or sulfonate group-containing ethylenically unsaturated monomer, a sulfate ester group-containing ethylenically unsaturated monomer and a mixture thereof; and wherein said silicone structure-containing modifier (C) comprises a silicone structure-containing silane (I) represented by the formula: R 1 - Si - (R 2 ) 3 (I) wherein R 1 represents a hydrogen atom, a C 1 -C 16 aliphatic hydrocarbon group, a C 5 -C 10 aryl group, a C 5 -C 6 cycloalkyl group, a vinyl group, an acrylic C 1 -C 10 alkyl group or a methacrylic C 1 -C 10 alkyl group, and each R 2 independently represents a C 1 -C 8 alkoxy group, an acetoxy group or a hydroxyl group.
Claim 2
Dependent Claim
116 words
The aqueous, silicone-modified acrylate polymer emulsion according to claim 1, wherein said monomer system (A) and said emulsifier (B) are, respectively, used in an amount of from 80 to 99.95 % by weight and in an amount of from 0.05 to 20 % by weight, based on the total weight of monomer system (A) and emulsifier (B), and said silicone structure-containing modifier (C) is used in an amount which satisfies the following relationships: 1 2 ≦ (A) + (B) (C) ≦ 99 1 wherein (A), (B) and (C), respectively, represent amounts of monomer system (A), emulsifier (B) and modifier (C) in terms of weight percentages based on the total weight of materials (A), (B) and (C).
Claim 3
Dependent Claim
42 words
The aqueous, silicone-modified acrylate polymer emulsion according to claim 1 or 2, wherein the ratio of the total weight of said monomer system (A), said emulsifier (B) and said modifier (C) to the weight of said aqueous medium is 75/25 or less.
Claim 4
Dependent Claim
103 words
The aqueous, silicone-modified acrylate polymer emulsion according to claim 1, wherein said monomer system (A) further comprises a comonomer copolymerizable with said acrylate monomer, said comonomer being at least one member selected from the group consisting of an acrylamide monomer, a methacrylamide monomer, a vinyl monomer and a carboxylic acid group-containing ethylenically unsaturated monomer, and wherein said acrylate monomer and said comonomer are, respectively, present in an amount of from 90 % to less than 100 % by weight and in an amount of from 10 % by weight or less, based on the total weight of said acrylate monomer and said comonomer.
Claim 5
Dependent Claim
26 words
The aqueous, silicone-modified acrylate polymer emulsion according to claim 4, wherein said comonomer of said monomer system (A) is a carboxylic acid group-containing ethylenically unsaturated monomer.
Claim 6
Dependent Claim
55 words
The aqueous, silicone-modified acrylate polymer emulsion according to claim 5, wherein said carboxylic acid group-containing ethylenically unsaturated monomer is at least one member selected from the group consisting of acrylic acid, methacrylic acid, itaconic acid and a half ester thereof, fumaric acid and a half ester thereof, and maleic acid and a half ester thereof.
Claim 7
Dependent Claim
79 words
The aqueous, silicone-modified acrylate polymer emulsion according to claim 1, wherein said sulfonic acid group- or sulfonate group-containing ethylenically unsaturated monomer of said emulsifier (B) is a radically polymerizable double bond-containing compound having a sulfonic acid group, or an ammonium or an alkali metal salt thereof, and said sulfate ester group-containing ethylenically unsaturated monomer of said emulsifier (B) is a radically polymerizable double bond-containing compound having a sulfate ester group, or an ammonium or an alkali metal salt thereof.
Claim 8
Dependent Claim
217 words
The aqueous, silicone-modified acrylate polymer emulsion according to claim 7, wherein said sulfonic acid group- or sulfonate group-containing ethylenically unsaturated monomer of said emulsifier (B) is a radically polymerizable double bond-containing compound having a substituent selected from the group consisting of a C 1 -C 20 alkyl group, a C 2 -C 4 alkyl ether group, a poly-C 2 -C 4 alkyl ether group, a C 6 or C 10 aryl group, and a succinic acid group, each of which is substituted with a sulfonic acid group which is in the form of an ammonium, a sodium or a potassium salt thereof, or a vinyl sulfonate compound having a vinyl group bonded to a sulfonic acid group which is in the form of an ammonium, a sodium or a potassium salt thereof, and said sulfate ester group-containing ethylenically unsaturated monomer of said emulsifier (B) is a radically polymerizable double bond-containing compound having a substituent selected from the group consisting of a C 1 -C 20 alkyl group, a C 2 -C 4 alkyl ether group, a poly-C 2 -C 4 alkyl ether group and a C 6 or C 10 aryl group, each of which is substituted with a sulfate ester group which is in the form of an ammonium, a sodium or a potassium salt thereof.
Claim 9
Dependent Claim
170 words
The aqueous, silicone-modified acrylate polymer emulsion according to claim 1, wherein said silicone structure-containing modifier (C) further comprises at least one member selected from the group consisting of a cyclic silane, a hydrolyzable group-containing linear siloxane and a silane (II) represented by the formula: (R 3 ) n - Si - (R 4 ) 4-n (II) wherein each R 3 independently represents a hydrogen atom, a C 1 -C 16 aliphatic hydrocarbon group, a C 5 -C 10 aryl group, a C 5 -C 6 cycloalkyl group, a vinyl group, an acrylic C 1 -C 10 alkyl group or a methacrylic C 1 -C 10 alkyl group, each R 4 independently represents a C 1 -C 8 alkoxy group, an acetoxy group or a hydroxyl group, and n is 0, 2 or 3; and wherein the molar ratio of said silane (I) to said at least one member selected from the group consisting of a cyclic silane, a hydrolyzable group-containing linear siloxane and a silane (II) is at least 10/100.
Claim 10
Dependent Claim
154 words
The aqueous, silicone-modified acrylate polymer emulsion according to claim 1, wherein said silicone structure-containing modifier (C) further comprises at least one member selected from the group consisting of a cyclic silane and a silane (III) represented by the formula: (R 3 ) 2 - Si - (R 4 ) 2 (III) wherein each R 3 independently represents a hydrogen atom, a C 1 -C 16 aliphatic hydrocarbon group, a C 5 -C 10 aryl group, a C 5 -C 6 cycloalkyl group, a vinyl group, an acrylic C 1 -C 10 alkyl group or a methacrylic C 1 -C 10 alkyl group, and each R 4 independently represents a C 1 -C 8 alkoxy group, an acetoxy group or a hydroxyl group; and wherein the molar ratio of said silane (I) to said at least one member selected from the group consisting of a cyclic silane and a silane (III) is at least 10/100.
Claim 11
Dependent Claim
60 words
The aqueous, silicone-modified acrylate polymer emulsion according to claim 1, wherein said acrylate monomer of said monomer system (A) contains 5 % by weight or more, based on the weight of said monomer system (A), of a C 5 -C 12 cycloalkyl ester of acrylic acid, a C 5 -C 12 cycloalkyl ester of methacrylic acid, or a mixture thereof.
Claim 12
Dependent Claim
36 words
The aqueous, silicone-modified acrylate polymer emulsion according to claim 1, wherein said modifier (C) is added to a system of said emulsion polymerization, so that the silicone-modification of said emulsion is performed during said emulsion polymerization.
Claim 13
Dependent Claim
225 words
The aqueous, silicone-modified acrylate emulsion according to claim 1, wherein said monomer system (A) is comprised of monomer systems (A 1 ) and (A 2 ), each comprising said acrylate monomer, and said emulsifier (B) is comprised of emulsifiers (B 1 ) and (B 2 ), each selected from the group consisting of said sulfonic acid group- or sulfonate group-containing ethylenically unsaturated monomer, said sulfate ester group-containing ethylenically unsaturated monomer and said mixture thereof, with the proviso that monomer systems (A 1 ) and (A 2 ) are the same or different, and emulsifiers (B 1 ) and (B 2 ) are the same or different, and wherein said emulsion polymerization is conducted in a sequence of step (1) and step (2), wherein in step (1), said monomer system (A 1 ) is subjected to emulsion polymerization in an aqueous medium in the presence of said emulsifier (B 1 ) to thereby obtain a preliminary aqueous acrylate polymer emulsion having a seed latex dispersed therein, and in step (2), said monomer system (A 2 ) and said emulsifier (B 2 ), optionally with an aqueous medium, are added to said preliminary aqueous acrylate polymer emulsion to effect emulsion polymerization thereof, thereby producing a final aqueous acrylate polymer emulsion, wherein said silicone-modification is performed using said silicone structure-containing modifier (C) during or after said emulsion polymerization.
Claim 14
Dependent Claim
27 words
The aqueous, silicone-modified acrylate polymer emulsion according to claim 13, wherein said modifier (C) is added in step (2) to perform the silicone-modification during the emulsion polymerization.
Claim 15
Dependent Claim
30 words
The aqueous, silicone-modified acrylate polymer emulsion according to claim 13, wherein said final aqueous acrylate emulsion is treated with said modifier (C) to perform said silicone-modification after said emulsion polymerization.
Claim 16
Dependent Claim
272 words
The aqueous, silicone-modified acrylate polymer emulsion according to claim 13, wherein in step (1), said monomer system (A 1 ) and said emulsifier (B 1 ) are, respectively, used in an amount of from 80 to 99.95 % by weight and in an amount of from 20 to 0.05 % by weight, based on the total weight of monomer system (A 1 ) and emulsifier (B 1 ); and wherein in step (2), said monomer system (A 2 ) and said emulsifier (B 2 ) are, respectively, used in an amount of from 80 to 99.95 % by weight and in an amount of from 20 to 0.05 % by weight, based on the total weight of monomer system (A 2 ) and emulsifier (B 2 ), wherein said silicone structure-containing modifier (C) is used in an amount which satisfies the following relationships: 1 2 ≦ (A 1 ) + (A 2 ) + (B 1 ) + (B 2 ) (C) ≦ 99 1 wherein (A 1 ), (A 2 ), (B 1 ), +(B 2 ) and (C), respectively, represent amounts of monomer system (A 1 ), monomer system (A 2 ), emulsifier (B 1 ), emulsifier (B 2 ) and modifier (C) in terms of weight percentages based on the total weight of materials (A 1 ), (A 2 ), (B 1 ), (B 2 ) and (C), and wherein the ratio of the total weight of said monomer system (A 1 ) and emulsifier (B 1 ) to the total weight of said monomer system (A 2 ) and emulsifier (B 2 ) is from 1/99 to 99/1.
Claim 17
Dependent Claim
45 words
The aqueous, silicone-modified acrylate emulsion according to claim 16, wherein in step (1), said monomer system (A 1 ) contains 0.5 to 30 % by weight of a carboxylic acid group-containing ethylenically unsaturated monomer, based on the weight of said monomer system (A 1 ).
Claim 18
Dependent Claim
45 words
The aqueous, silicone-modified acrylate emulsion according to any one of claims 1 to 17, which is a paint, an undercoating or finish coating material for building materials, an adhesive, a pressure-sensitive adhesive, a processing agent for papers, or a finish coating material for textile fabrics.
Claim 19
Dependent Claim
21 words
The aqueous, silicone-modified acrylate emulsion according to claim 18, which is a paint, or a finish coating material for building materials.
References Cited (Backward Citations)
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